Physics · chapter PYQs

Mechanical Properties of Solids, on the exam screen.

2 questions from NEET 2026, NEET 2020, 2 minutes, marked +4 / −1. See them with solutions.

Mechanical Properties of Solids · PYQs

Candidate: You

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Q1/2

Question 1 · NEET 2026 · Q2 · +4 / −1

Match List I with List II and choose the correct answer from the options given below:

List I	List II
P) Young's Modulus	I) $\frac{\Delta d}{\Delta L}\left(\frac{L}{d}\right)$
Q) Compressibility	II) $\frac{FL}{A(\Delta L)}$
R) Bulk Modulus	III) $-\frac{1}{\Delta P}\left(\frac{\Delta V}{V}\right)$
S) Poisson's Ratio	IV) $-P\left(\frac{V}{\Delta V}\right)$

Answer and explanation

Answer: (4)

Young's modulus is stress/strain $= \frac{FL}{A\,\Delta L}$ (II); compressibility is the reciprocal of bulk modulus $= -\frac{1}{\Delta P}\frac{\Delta V}{V}$ (III); bulk modulus $= -P\frac{V}{\Delta V}$ (IV); and Poisson's ratio is lateral strain over longitudinal strain $= \frac{\Delta d}{\Delta L}\frac{L}{d}$ (I). Hence P-II, Q-III, R-IV, S-I, which is option (4).

Question 2 · NEET 2020 · Q137 · +4 / −1
A wire of length L, area of cross section A is hanging from a fixed support. The length of the wire changes to L $_{1}$ when mass M is suspended from its free end. The expression for Young's modulus is
Answer and explanation
Answer: (3)
Young's modulus $Y = \frac{Stress}{Strain} = \frac{F/A}{\Delta L/L}$ . Substituting, $Y = \frac{Mg}{A} \times \frac{L}{L_1 - L} = \frac{MgL}{A(L_1 - L)}$ . Chapter: Mechanical Properties of Solids.